5H64

Cryo-EM structure of mTORC1


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.40 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

4.4 angstrom Resolution Cryo-EM structure of human mTOR Complex 1

Yang, H.Wang, J.Liu, M.Chen, X.Huang, M.Tan, D.Dong, M.Q.Wong, C.C.Wang, J.Xu, Y.Wang, H.W.

(2016) Protein Cell 7: 878-887

  • DOI: 10.1007/s13238-016-0346-6
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Mechanistic target of rapamycin (mTOR) complex 1 (mTORC1) integrates signals from growth factors, cellular energy levels, stress and amino acids to control cell growth and proliferation through regulating translation, autophagy and metabolism. Here w ...

    Mechanistic target of rapamycin (mTOR) complex 1 (mTORC1) integrates signals from growth factors, cellular energy levels, stress and amino acids to control cell growth and proliferation through regulating translation, autophagy and metabolism. Here we determined the cryo-electron microscopy structure of human mTORC1 at 4.4 Å resolution. The mTORC1 comprises a dimer of heterotrimer (mTOR-Raptor-mLST8) mediated by the mTOR protein. The complex adopts a hollow rhomboid shape with 2-fold symmetry. Notably, mTORC1 shows intrinsic conformational dynamics. Within the complex, the conserved N-terminal caspase-like domain of Raptor faces toward the catalytic cavity of the kinase domain of mTOR. Raptor shows no caspase activity and therefore may bind to TOS motif for substrate recognition. Structural analysis indicates that FKBP12-Rapamycin may generate steric hindrance for substrate entry to the catalytic cavity of mTORC1. The structure provides a basis to understand the assembly of mTORC1 and a framework to characterize the regulatory mechanism of mTORC1 pathway.


    Organizational Affiliation

    Ministry of Education Key Laboratory of Protein Sciences, Tsinghua-Peking Joint Center for Life Sciences, Beijing Advanced Innovation Center for Structural Biology, School of Life Sciences, Tsinghua University, Beijing, 100084, China. hongweiwang@tsinghua.edu.cn.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Serine/threonine-protein kinase mTORA, a2549Homo sapiensMutation(s): 0 
Gene Names: MTORFRAPFRAP1FRAP2RAFT1RAPT1
EC: 2.7.11.1
Find proteins for P42345 (Homo sapiens)
Explore P42345 
Go to UniProtKB:  P42345
NIH Common Fund Data Resources
PHAROS  P42345
Protein Feature View
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  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Regulatory-associated protein of mTORB, b1335Homo sapiensMutation(s): 0 
Gene Names: RPTORKIAA1303RAPTOR
Find proteins for Q8N122 (Homo sapiens)
Explore Q8N122 
Go to UniProtKB:  Q8N122
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PHAROS  Q8N122
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  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Target of rapamycin complex subunit LST8C, c326Homo sapiensMutation(s): 0 
Gene Names: MLST8GBLLST8
Find proteins for Q9BVC4 (Homo sapiens)
Explore Q9BVC4 
Go to UniProtKB:  Q9BVC4
NIH Common Fund Data Resources
PHAROS  Q9BVC4
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.40 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Natural Science Foundation of ChinaChinaU1432242
National Natural Science Foundation of ChinaChina31425008
National Natural Science Foundation of ChinaChina91419301
Basic Research Project of Shanghai Science and Technology CommissionChina12JC1402700
Program of Shanghai Subject Chief ScientistChina14XD1400500

Revision History 

  • Version 1.0: 2017-01-25
    Type: Initial release
  • Version 1.1: 2017-03-01
    Changes: Database references
  • Version 1.2: 2017-12-06
    Changes: Advisory, Data processing, Database references
  • Version 1.3: 2019-11-06
    Changes: Data collection, Other